How to wash sotong (squid)?

I'm a sotong lover. I've always wanted to try to cook sambal sotong (one of my favorite food), but i do not know how to choose fresh sotong and i don't know how to wash it as well, how to cook?

Yesterday i went shopping at Tesco @ Puchong, i saw a group of ppl buying sotong. I told myself, it's either very cheap, or it's very fresh. So i also don't want to 'zap shu', i go buy as well. I see those aunties taking long long time to choose, since i dono how to choose, i just simply picked a few... so now, how to wash?????!!!!!

these are the ones i picked, looked fresh rite. hehe...
i took 4 only.. cos i scared i dono how to wash and
dono how to cook. 4 sotong = RM 1.93, cheap or not ar?

I took a few minutes to look at these squids,
and decided to pull out the head so that i
can wash the body.

pull pull pull,
i think i pulled out all the intestines
as well.

then i saw one transparent thing on the body
of the sotong, i pulled it out, i think it's the
bone of the sotong!!

wash wash wash, clean or not? hehe...
as for the head, i dono what to do with it,
so i ended up chopped off the eyes
then wash it ..

cut cut cut into small pieces..
so did i wash correctly ar?